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Old 07-05-2016, 10:35 AM   #1
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Tongue weight

I am looking to buy a Roo 19. Sticker on the Roo says that the tongue weight is 394 lbs. Does anyone know what the actual tongue weight on a Roo 19 would be with propane and batteries. Has anyone ever had theirs weighted when loaded. My TV is a Lincoln MKT which is the same as a Ford Flex with the ecoboost engine. It is rated at a 450 lb hitch weight and a 4500 lb towing capacity. I know that I am going to be pretty close to the MKT rating but I have seen a Flex pulling a Roo 19 once and it looked okay. Currently I have a Roo 17 and the MKT tows it easily, but it is a lighter TT. Thanks
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Old 07-05-2016, 10:41 AM   #2
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That 394 number is fantasy.
The actual loaded tongue weight will easily exceed 450lbs.
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Old 07-05-2016, 10:42 AM   #3
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You're over 450 lbs. The FR brochures say the dry weights they list are with propane and common options. Battery will add another 50 or so and you'll transfer about 12% of anything else in the camper to the front. I'd guess you'll be about 500 lbs loaded. Look at the sticker on your hitch and see if it lists a separate limit for weight distributing (which will be a must on that vehicle with that trailer ).
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Old 07-05-2016, 10:54 AM   #4
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You'll transfet more than 12% of anything in the camper to the front. Its a complicated calculation but a percentage of anything in the trailer ahead of the axle is hitch weight, the closer to front the higher the percentage. I had a SOB 19'ish hybrid with the same layout and with lower dry and GVW than a Roo 19 and my hitch weight approached 700 lbs.

You need to guesstimate 600 minimum. More if you ever intend on hauling water in the tank.

No comment on the MKT capability for towing a Roo 19 other than I would not choose that combination.
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Old 07-05-2016, 02:46 PM   #5
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Quote:
Originally Posted by bikendan View Post
That 394 number is fantasy.
The actual loaded tongue weight will easily exceed 450lbs.
Actually the manufacturer’s published hitch weight is a valid number for a fully loaded and evenly balanced trailer.

The manufacturer’s published hitch weight is used to validate the trailer’s certified total GAWR ratings and GVWR.

The following is a verbatim excerpt from the Federal Motor Vehicle Safety Standard 571.110, paragraph S9.2.…. “On RV trailers, the sum of the GAWRs of all axles on the vehicle plus the vehicle manufacturer's recommended tongue weight must not be less than the GVWR. If tongue weight is specified as a range, the minimum value must be used.”

When an owner takes position of the trailer the hitch/tongue weight becomes 100% their responsibility.
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Old 07-06-2016, 06:00 PM   #6
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Airedale I agree with your assessment. On this Roo 19 there are two axle rated at 2200# each which = 4400#. Add the published tongue weight of 394# and you get the GVWR 4794#. Which is the maximum weight of the TT plus cargo. So if the actual tongue weight would be closer to 600# then add that to the 4400# for the axles you get 6000# which is beyond the manufactures rating of 4794# for this TT. Something is not adding up.


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Old 07-06-2016, 06:26 PM   #7
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Airedale I agree with your assessment. On this Roo 19 there are two axle rated at 2200# each which = 4400#. Add the published tongue weight of 394# and you get the GVWR 4794#. Which is the maximum weight of the TT plus cargo. So if the actual tongue weight would be closer to 600# then add that to the 4400# for the axles you get 6000# which is beyond the manufactures rating of 4794# for this TT. Something is not adding up.


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When an owner takes position of the trailer the hitch/tongue weight becomes 100% their responsibility.

Let's work with these specs ( http://www.forestriverinc.com/produc...age=5057&Tab=4 ).

Add the UVW and the CCC...That's the trailer's GVWR...deduct the hitch weight...that's the total GAWR. Divide by the number of axles... that's the individual GAWRs...
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Old 07-06-2016, 09:06 PM   #8
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Published hitch weights are dry numbers, not fully loaded numbers.


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Old 07-06-2016, 10:07 PM   #9
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Originally Posted by lbrjet View Post
Published hitch weights are dry numbers, not fully loaded numbers.


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Old 07-06-2016, 10:40 PM   #10
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Quote:
Originally Posted by Airdale View Post
Actually the manufacturer’s published hitch weight is a valid number for a fully loaded and evenly balanced trailer.
No, its an unloaded weight.

Quote:
Originally Posted by Airdale View Post
The following is a verbatim excerpt from the Federal Motor Vehicle Safety Standard 571.110, paragraph S9.2.…. “On RV trailers, the sum of the GAWRs of all axles on the vehicle plus the vehicle manufacturer's recommended tongue weight must not be less than the GVWR. If tongue weight is specified as a range, the minimum value must be used.”
Key words here are "must not be less" or in other words must be more. All this says is the "recommended" tongue weight plus max axle weights must be more than GVWR. So all it says is the tongue plus axle capacity must be more than the GVWR - which is logical.

I don't know what recommended tongue weight is, but its not the same thing as the fictional brochure tongue weight.

My Roo's tongue weight was 850 lbs at the scale - with the WDH properly setup and the trailer level. That was more than 250 pounds over the brochure weight and the total trailer weight was 300 pounds under the max.

I think in the OP's case, there is no way the actual tongue weight will be under 450, and we don't know the payload spec on the tv, but that may be an issue as well.
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